Gas-furnace.



r a 2 I f J. ABRAMS. GAS FURNACE.

APPLICATION FILED APR. 27, 1911.

Patented Feb. 13, 1912.

2 SHEBTSFSHEET 1,

COLUMBIA PLANOuRAPN CO., WASHINGTON. D. C-

. J. A. ABRAMS.

GAS FURNACE. APPLICATION FILED APB.27, 1911.

1,017,489. Patented Feb. 13,1912.

' 2 SHEETS-SHEET 2.

COLUMBIA PLAN c.

UNITED STATES PATENT OFFICE.

JOHN A. ABRAMS, 0F WADSWORTH, OHIO.

GAS-FURNACE.

To all whom it may concern:

Be it known that I, J OHN A. ABRAMs, a citizen of the United States, residing at Wadsworth, in the county of Medina and State of Ohio, have invented certain new and useful Improvements in Gas-Furnaces; and I do declare the following to be a full, clear, and exact description of the inven tion, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to stoves and furnaces, and more especially to heating furnaces adapted for the consumption of gas; and one object of the same is to improve the construction of the radiators within the furnace so that a larger surface is provided for heating the air than hitherto, and to restrict the outlet of the fumes from said radiators so that they will be retained therein as long as possible.

Another object is to improve the construction of the inlets whereby all air which is consumed by the burners is admitted from the compartment containing the furnace but all air which is heated by the radiators and passed upward into the building above is admitted from entirely a separate source and preferably from outdoors where it is fresh, so that none of the fresh air is consumed and it cannot be contaminated by gas or products of combustion.

These object-s are carried out by the construction hereinafter more fully described and claimed, and as shown in the drawings wherein Figure 1 is a perspective view of this furnace complete, with the front side of the casing broken away and certain parts in section to show its interior construction. Fig. 2 is a vertical section taken about on the line 2-2 of Fig. 1. Fig. 8 is a cross section taken about on the line 33 of Fig. 2.

In the drawings the numerals 1 designate legs supporting a casing 2, which is preferably rectangular and upright and has a flat closed top 3 through which project the hot air pipes 4 that lead to any part of the building or apartment which is to be heated, and which will need no further illustration or description.

The numeral 5, designates a cold air receptacle which extends across and projects outwardly from the casing and is arranged on the outside of the casing. This coldair Specification of Letters Patent.

Application filed April 27, 1911.

Patented Feb. 13, 1912.

Serial No. 623,715.

receptacle is provided on its front portion with double oblique outer walls having at their apexes a pipe connection 2, and by constructing the air receptacle with double oblique walls, the air is more evenly distributed between the radiators and around the casing. The arrows show the course of the air upward therethrough into and out the hot air pipes 4t and throughout the building; and in its passage upward through the casing, it is desired to heat this air to the greatest degree possible without mingling with it any of the fumes or products of combustion arising from the burning of artificial or natural gas, and without taking from it any of the fresh air for the'purpose of feeding the burner. Many constructions have been hitherto devised for accomplishing this same general result, and in the present instance the construction of the gas burner 7 with its mixer, valve, and feed pipe, which are not numbered or described, and also the addition of the pilot light 8 and the hot water coil 9 and its feed pipe, form no part of the present invention and are susceptible of considerable modification as will be clear.

The numeral 10 designates a rectangular fire box disposed within and across the lower portion of the casing 2 and mounted upon supports 11 which raise it above the bottom thereof, and opening into the bottom of the casing are upright'tubes 12, each having its individual damper 13 and its lower end passing through the bottom of the casing so as to admit air which obviously passes upward into the fire box and is consumed. Thus it will be seen that, reaching through a door with which the front of the casing is provided and which will hardly be necessary to illustrate, the operator may gain access to the handles of the dampers 13 and can set them to admit more or less air to the burner; although the air for purposes of combustion is generally drawn inward through the mixer with the gas in the usual manner.

Coming now more particularly to the present invention, the numerals 20 designate upright radiators or fiat fire boxes, of which there are several disposed side by side and spaced slightly from each other and form the walls of the side of the casing 2 at the bottom of the same, and each box has a beveled lower end 21 and a flat upper end or head 22. The lower end is flanged at its sides as at 23 and riveted upon the top of the fire box 10 so as to communicate therewith at its smaller inlet end, and through the head 22 opens a restricted outlet 2% which may be a piece of tube, and all of said outlets lead upward and connect with a cross box or fume collector 25. The latter stands within and near the upper end of the casing, again out of contact with all of its walls, and from one end of it leads the fume pipe or exhaust 26, which passes outward through the side of the casing and leads upward into the chimney in a manner which will be understood.

This construction of radiators or flat fire boxes I find to be extremely useful in a gas furnace of this character. First I might say that the boxes are all duplicates in structure, and can therefore be made in the same set of dies; they are by preference of sheet metal and of proper size and proportions, and are therefore cheap and replaceable when worn orburned; the outlets 24 which connect with the fume collector 25 may be screwed into place which further assists replacing the boxes 20 or parts; and the flanges 23 at their lower ends permit their disconnection from the fire box 10, while the undercut or bevel of said lower ends at 21., where such ends overlie the sides of the fire box, permit them to receive considerable heat radiated from the fire box itself and passing upward through the casing which otherwise would be lost. In other words, I consider it desirable to make the lateral width of the radiators 20 greater than the lateral dimension of the fire box 10, and of course the factthattheir adjacent faces are slightly spaced and are rather large permits the upward flowing currents of fresh air to become thoroughly heated before they reach the hot air pipes 4L. Finally, the use of out lets 2%. which are of restricted size causes the retention within these radiators 20 of the fumes and products of combustion 'rising from the burner so that the same move upward rather slowly through the radiators and the greatest percentage possible of their boat is applied to the walls of the latter and hence is communicated to the air which it is desired to warm. As shown, the inlet pipes or tubes 12 are larger than the outlets 24, but the use of the dampers 13 in the former permits the regulation of the size so that the proper burning of the commingled gas and air will not be destroyed. All parts are of the desired sizes, shapes, proportions, and

materials consistent with the claim herein Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

which is to be warmed and passed to the building above, to become mixed with or contaminated by either the foul air which may exist in the basement where the furnace is located or the fumes or products of combustion which pass upward through the radiators and out the chimney; and by the construction described I have provided the largest possible radiating surface around and beneath and above said radiators and the fume collector 25, all located within a rectangular surrounding casing, whereby the flames and the products of combustion (retarded in their upward passage) will heat the fresh air along its upward course. I consider a rectangular casing preferable to one of other shape because the room in the cellar where the furnace will be located is usually rectangular and less space is lost if the general contour of the furnace is the same.

lVhat is claimed as new is:

A gas furnace comprising a casing with a rectangular fire box extending across and above the bottom of the same and spaced from the surrounding wall of the casing, a cold air receptacle secured to one side at the bottom of the casing and extending substantially the entire width thereof, and projecting outwardly from the casing said receptacle having on one side double oblique walls having an inlet connection at their apex, aplurality of rectangular shaped radiators arranged midway within the casing and spaced from each other and from the surrounding wall of the casing, outlets each having their lower ends secured to the central portions of the tops of the radiators, a fume collector arranged between the top of the casing and above the radiators, and provided on one end with an exhaust pipe, said fume collector having the upper ends of the outlets detachably connected thereto, said ra diators having oblique and flanged lower ends which are detachably secured to the fire box, a plurality of tubes having their lower ends opening into the bottom of the casing, their upper ends being connected to the fire box, dampers for each of the tubes, a plurality of pipes secured to the top of the casing, and said spaces between the radiators, fire box and the walls of the casing forming hot air passages which communicate with said pipes on the top of the casing.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

JOHN A. ABRAMS. \Vitnesses:

JOHN O. LICEY, S. P. HARTZELL.

Washington, D. 0. 

